Valve-grinding tool.



H. R. PAR$0 NS.

VALVE GRINDING TOOL.

APPLICATION FILED SEPT. 1a, 1913.

1,091,954. Patented Mar. 31, 1914.

wmvsssss r I Y I INVENTOR 0X74 fif/Y/Fy fi? fiewso/vs M u A7TORNEY8 HENRY R. PARSONS, OF SHARPSVILLE, PENNSYLVANIA.

VALVE-GRINDING T'OOL.

Specification of Letters Patent.

Patented Mar. 31, 1914.

Application filed September 13, 1913. Serial No. 789,651.

To all whom it may concern:

Be it known that I, HENRY R. PARSONS, a citizen of the United States, and a resident of Sharpsville, in the county of Mercer and State of Pennsylvania, have invented a new and useful Improvement in Valve-Grinding Tools, of which the following is a specification.

My present invention relates to valve grinding tools utilized to grind in valves on automobile motors and other mechanisms where valves are used, my object being to provide a tool having means to engage a valve, and also provided with means whereby the operator may readily and conveniently press downwardly upon the same and rotate it at the same time, utilizing both hands in part performance of each operation.

In the accompanying drawing which illustrates my invention Figure 1 is a side elevation of my improved tool, the upper part being partly broken away in order to more clearly illustrate the connection of the yoke or cross-head with the upper end of the stem, and Fig. 2 is a perspective view of the up per portion of the tool broken away.

Referring now to these figures 1t will be noted that my improved tool consists of a rod or stem A, he lower end of which is formed with a tapering flattened end a, similar to the head of a screw driver, in order to conveniently engage and fit a valve to be ground, the upper end of the stem being formed with a reduced neck a" for a purpose to be hereinafter brought out. Intermediate the ends of the stem of rod A is an enlarged handle B, rigidly united therewith and preferably corrugated as shown in order to prevent slipping in the hands.

Loosely mounted upon the upper reduced neck portion a of the rod or stem A, and ata point intermediate its ends, is a laterally extending yoke or cross-head C, the opposite ends of which project outwardly beyond the plane of the surface of handle B, and are provided with transverse openlngs through which the upper ends of depending rods D extend, it being noted particularly from Fig. 1 that the cross-head openings 0 are substantially greater in diameter than rods D, and that the latter are provided beneath their upper headed ends (Z- with curved or dished washers d in order to provide for a swiveled movement of the rods with respect to the yoke or cross-head. The rods D are bent at their lower ends to form rings d located slightly above the upper end of handle B, and designed to receive the thumbs of the operator when the tool is in operation. Thus with the lower headed end a of the tool in connection with the valve and the tool held in upright position, the operators thumbs are thrust through the rings d with the palms of the hands turned inward and in engagement with the corrugated surface of handle B. The tool may then be conveniently and readily rotated or oscillated by movement of the hands in relatively opposite directions, from which it will be seen that both hands cooperate to perform the operation of rotating the tool, and to also press the tool downwardly in order to effect close engagement between the valve and its seat, inasmuch as the thumb connections have both a swiveled and revoluble connection with the stem. Thus by the use of my improved tool a valve which has become either worn from use or clogged by carbon deposit may be quickly and easily ground to fit'firmly and evenly upon its seat.

I claim:

1. A valve grinding tool of the character described, comprising a stem having a valve engaging head at its lower end, and provided with a rigid handle intermediate its end, a yoke or cross-head having a revoluble connection intermediate its end upon the upper end above the stem, and thumb rods depending from the opposite ends of the yoke or cross-head, and having swiveled connections at their upper ends to the yoke or cross-head, the lower ends of said thumb rods being bent to form thumb rings located slightly above the upper end of the handle, all for the purpose described.

2. A valve grinding tool, comprising a stem provided with an engaging head at its lower end, and with an intermediate rigid handle, a revoluble cross-head or yoke at the upper end of the stem, and thumb rings deof the handle, and having revoluble con pending from the cross-head or yoke at opposite sides of and above the handle, all for all for the purpose described.

HENRY R. PARSONS.

the purpose described.

3. A valve grinding tool, comprising a stem having a lower valve engaging head and a rigid intermediate handle, and thumb rings located above and upon opposite sides I Witnesses:

J. A. YAUGHTER, WILLIAM H. SNYDER.

Copies of this patent may be obtained for five cents each, byaddressing the Commissioner of Patents, Washington, D. O.

neetions with the upper portion of the stem, 10 I 

